1
Proceedings of the International School on Symmetry and Structural Properties of Condensed Matter : September 6-12, 1990, Zajaczkowo, Poznan, Poland /
Book
2
Symmetries and broken symmetries in condensed matter physics : proceedings of the Colloque Pierre Curie held at the Ecole superieure de physique et de chimie industrielles de la ville de Paris, Paris, September 1980 /
Book